American Bass XMAXXX-1511

15″ subwoofer · dual 1 Ω · 4,000 W RMS

Fs 30.8 HzQts 0.39Vas 1.54 ft³Xmax 0.89″

Recommended box

For a sedan, one sub, 4,000 W. It’s the same math as the designer’s step-by-step mode, where you can fit the box to your space, vehicle and amp and get plans, a cut sheet and DXF.

Sealed

Net volume1.64 ft³ (46.5 L)
Qtc0.54
Fc43 Hz
F3 (−3 dB, no cabin gain)61 Hz
Example box (outside)17 11/16″ × 17 11/16″ × 13 1/4″
Open sealed box in designer

Ported

Net volume2.33 ft³ (66 L)
Tuning (Fb)29 Hz
Portround port Ø3″, 7 3/8″ long
Port velocity at 4,000 W709 ft/s
F3 (−3 dB, no cabin gain)27 Hz
Example box (outside)23 1/4″ × 18 1/2″ × 13 3/16″
Open ported box in designer
203040506080100150200606672788490HzdB
Sealed Ported · SPL in dB at 1 W / 1 m, no cabin gain

Thiele/Small parameters

Fs30.8 Hz
Qts0.39
Qes0.427
Qms4.56
Vas1.54 ft³
Re (one coil)≈ 0.85 Ω
Sd121.8 in²
Xmax0.89″
Vd107.9 in³ calc.
Mms535 g calc.
BL14.3 T·m calc.
EBP72 — sealed or ported calc.
Sensitivity, 1 W / 1 m86.8 dB calc.

General

Size15″
Voice coilsdual 1 Ω
RMS power4,000 W

Mounting dimensions

Ø≈ 15 9/16″cutout Ø14 7/16″mounting depth 10 13/16″magnet Ø≈ 9 3/8″
Cutout diameter14 7/16″
Mounting depth10 13/16″

Cone area (Sd) calculated from Fs, Vas and Mms: 121.8 in².

“≈” means the value isn’t in the spec sheet and a typical value for the size is used; “calc.” means it’s calculated from the published parameters. Check the manufacturer’s spec sheet before you build.

Data sources

Other American Bass 15″ models